pdf Gfa ad 453 issue 2 Popular

A: MODIFICATION OF STARTER MOTOR MOUNT AND B: THE ENGINE SUPPORT BRACKETS C: FAILURE OF FUEL LINES

Vibration damage has occurred to the DG-400 engine. The rubber fuel lines attached to the engine have proven to be subject to failure because of exposure to heat. Note: The manual amendments required by Technical Note No. 826/22 have been incorporated in the manuals reissued under GFA AD 401. Because Technical Notes No. 826/22 and No. 826/25 were issued a long time ago it is possible these modifications have already been incorporated. In that case all that is required is a log book entry confirming that the requirements of this AD have been complied with. The requirements in TN No. 826/22 with regard to the propeller support blocks 4M5 are superseded by the requirements of TN No. 826/25.

Issue 2: In Issue 1 of this AD there was a requirement to modify the propeller shaft however further experience has shown that even the modified shaft may fail. The shaft must therefore be replaced under GFA AD 467 and the requirement to modify the shaft has been removed from this AD. Glaser-Dirks Technical Note No. 826/22, Work Instructions No. 1, 2 and 3 for TN 826/22, Rotax Technical Bulletin No. 505-04 pages 3 to 5, Technical Note No. 826/25, Work Instruction No. 1 for TN No. 826/25, drawing 4M31 and Sketch 1 all of which form part of this AD.